General Motors (GM) is revisiting a technology long thought to be obsolete in the world of cars: the two-stroke engine.

Automotive giant General Motors has filed patents for a two-stroke engine of the type whose excess emissions took it off the road decades ago as a technology seen as having no future.The patent is for ...

Unless you're really into dirt bikes, you probably haven't touched a two-stroke engine in decades — if you ever have. These mechanically simple motors combine the four strokes we all know and love ...

Traditional Two-Stroke Engine Issues A traditional two-stroke engine has the piston pushing down after firing, moving past an exhaust port and allowing the exhaust gases to leave the chamber.

From sleek cafe racers to powerful superbikes, the fastest motorcyles of the 1970s left a lasting mark on performance and biking culture.

General Motors may not be building a bike engine, but this two-stroke concept has real potential for motorcycle engineering.